Mobile liquid spray unit



Jan. 5, 1965 E. L. JOHNSON MOBILE LIQUID SPRAY UNIT Filed June 17, 19636 Sheets-Sheet 1 UZQAMM 2 2 i 2/oo/ v ,4 $1 M,

- Jan. 5, 1965 E. L. JOHNSON 3,163,880

MOBILE LIQUID SPRAY UNIT 6 Sheets-Sheet 2 Filed June 17. 1963 INVENTOR.EDWIN L.JoHNsoN ATTORNEYS Jan. 5, 1965 E. L. JOHNSON 3,163,880

MOBILE LIQUID SPRAY UNIT Filed June 17, 1963 6 Sheets-Sheet 3 32 25'39'23 3s 24 25 if 31 25' 22 22 36 3 s 39 37 37 e 7 28 as 28 8 I9 29 29 5INVENTOR ATTORNEYS 1965 E. L. JOHNSON 3,163,880

MOBILE LIQUID SPRAY UNIT Filed June 17, 1963 6 S e see 4 lo 200 v 94 '984 INVENTOR.

EDWIN L. JoHNsoN AZT'OR NEI'YS Jan. 5, 1965 E. JOHNSON 3,163,880

MOBILE LIQUID SPRAY UNIT Filed June 17, 1963 6 Sheets-Sheet 6 ATTORNEYSUnited States Patent 3,1635% MGBEE LIQUID SPRAY UNIT Edwin L. Johnson,Gttawa, Kenn, assignor to Young Spring & Wire Corporation, BeverlyHills, Los Angeles, Qalifi, a corporation of Michigan Filed dune 17,1963, fier. No. 288,359 11 Claims. ((15. 15-626) This invention relatesto a mobile sign washing unit, and more particularly to a truck having atank body and receptacles for carrying washing water and detergents andan adjustable bucket seat for supporting a person for washing andcleaning signs or other objects of a height above the ground which arenot conveniently accessible from the ground.

Various types of signs are mounted along highways, adjacent motels andother places of business of a structure which need cleaning atintervals, and such signs are not easily accessible by a person from theground. Various hand means have been devised for washing signs includingstanding upon ladders and the like which are cumbersome and often timescausing accidents along the highway and are generally inefficient.

It is the principal object of the present invention to provide a mobileunit which may be driven alongside the sign and which carries on theunit water and detergents in separate tanks or compartments and themobile unit including a support for a bucket seat to support a personfor operating a brush having attachments through vari ous tubes to thetanks of the mobile unit and by manipulation of levers and valves thebucket seat may be adjusted to the proper height with respect to thesign and also by manipulation of other levers water or water and variousetergents can be utilized through the brush to clean the signs.

ther objects of the present invention are to provide the truck with aframe structure having a tank or compartment built over and above therear wheels of the truck and supported by the side frame members of thetruck; to provide a resilient mounting for the tank on the truck; toprovide the tank with struts or partition members having openingstherein for allowing the liquid to pass through the partitions andwherein the partitions and struts will strengthen the tank; to providean opening in the top of the tank having a removable cover portion forthe purpose of easy cleaning thereof at intervals; to provide aframework structure on the cover of the tank consisting of cross membersfor strengthening the body of the tank structure; to provide a pluralityof cross members on the cover having spaced, curved recesses forreceiving a plurality of barrels or tanks therein separated forcontaining different types of detergents and liquids; to provide ahousing for the separate containers mounted on the cover of the tank; toprovide a support at the rear of the truck; to provide an arm pivotallymounted to the upper end of said support to an outer end of which thebucket seat is pivotally attached; to provide an arm spaced from theupper end of the support having a link connected to one end thereof andpivotally connected to the lower portion of the bucket seat; to providean extensible member such as a piston and cylinder having one endpivotally connected to a bracket near the upper end of said support andits other end to said arm for raising and lowering said bucket seat; toprovide hydraulic means for rotating said support to move the bucketseat transversely of the truck; to provide a fluid supply carried by thetruck for operating the hydraulic cylinders or extensible members tomove the bucket seat as required by the user; to provide connections:between the tanks and compartments of the water and detergent to abrush having a handle for manipulation by the user of the cleaningequipment; to provide controls for the user of the equipment formanipulation of the various valves for admitting fluid from the tanks tothe brush and for operating the hydraulic equipment; and to providemeans for mounting the rotatable standard on the truck. 7

Still further objects of the present invention are to provide a drum atthe rear of the truck body for mounting of a hose having connection withthe tubular members connected to the tank whereby the device may be usedfor spraying of weeds or other growth in fields, along the highway andother places, and to provide a device of this character simple andeconomical to manufacture.

Other objects and advantages of this invention will become apparent fromthe following description taken in connection with the accompanyingdrawings wherein are set forth by way of illustration and examplecertain embodiments of this invention.

FIG. 1 is a perspective view of my invention with the front end of thetruck broken away showing application of the cleaning brush to the sign.

FIG. 2 is an elevational partly fragmentary perspective view of theframework for mounting of the tanks or barrels for the detergents withpart of the housingbroken away.

FIG. 3 is an elevational fragmentary view of the side members of theframe 'on the truck showing the cushioning mounting for the tank body.

FIG. 4 is an elevational cross-sectional view of the cushion mounting.

FIG. 5 is an elevational fragmentary perspective view showing the strutand partition arrangement in the main tank of the structure.

FIG. 6 is an elevational perspective view of the sup port and armarrangement for the bucket seat and particularly illustrating thehydraulic equipment for rotating the support and seat therewithtransversely of the truck.

FIG. 7 is an elevational fragmentary view showing the hose connectionsto the tanks.

FIG. 8 is a fragmentary view particularly illustrating the levers andvalve members and hose connections leading from the tanks and hydraulicequipment to the bucket seat for use by the operator.

FIG. 9 is a diagrammatic view of the fluid and tank arrangement with theconnections thereto and solenoid valves for operation of the water anddetergents either heated or cold for admission to the brush cleaningapparatus.

FIG. 10 is a diagrammatic view 'of the hydraulic cylin- V tiers andvalves and pump and motor arrangement for the operation of the hydrauliccylinders for movement of the bucket seat.

FIG. 11 is a plan view of the main tank showing the drain plug openingsfor filling the tank and for draining same.

FIG. 12 is an elevational perspective view showing the mechanism forlocking the bucket seat to the cover while transporting the vehicle.

Referring more in detail to the drawings:

The reference numeral 1 designates a mobile washing unit embodying thefeatures 'of my invention comprising a vehicle or truck 2 having rearwheels 3 and front wheels 4 including a framework 5.

The frame 5 includes side members 6 and 7 for supporting a tank 8 havinga bottom 9 and a top 10 having an open portion it). The tank 8 isrearwardly of the cab 11 of the truck. The bottom 9 of the tank 8 has acut-away portion 12 to accommodate the wheels 3 is illustrated inFIG. 1. The tank 8 has sides 13, a front end 14. and a rear end 15.Mounted within the tank and spaced longitudinally therein are struts orstrengthening members 13, 14 and 15 having a plurality of notches 16 and17 for allowance of liquid to pass therethrough in the tank and toassist in mixing of the liquid when Patented Jan. 5, 19 65 and spacedfrom each other longitudinally of the frame 5. These transverse members23 engage upon and are secured to the horizontal arm 23' of the brackets13 and 19 by bolts and are also fastened to angle-shaped members 24 and25 which have their horizontal portions 26 engaging under the upperhorizontal portions 23' of theU-shaped brackets. L-shaped brackets 28are provided to engage inside the U-shaped bracket members 18 and 19 andhave a leg 29 engaging the lower arms 30 of the U-shaped brackets 18 and19 as illustrated in .FIG. 4.

In order to resiliently mount the tank 3 on the U- shaped brackets 18and 19 as just above described, 1 provide spaced neoprene members 32 and33 on each end of the plate 23 and longitudinally of the tank 8 and overthe neoprene members is a U-shaped member 34 having plates 34' providedwith threaded openings 35 for receiving the threaded ends 35' of studbolts 36 which extend throughopenings in the plate member 23, alongsidethe horizontal port-ions 23' of the U-shaped members 13 and'19 and thehorizontal leg portion 26 of the L- shaped members 24 and 25, saidopening being larger than the stud bolt to allow movement therein.Neoprene collars 37 are inserted over the bolts 36 with Washers- 37 andnuts 38 for the bolts 36 for fastening the tank 8 to the side members 6and 7 in a'resilient manner.

The front and rear transverse plates 23 at substantially the centerthereof are provided with cylindrical members 39 and mounted forvertical movement therearound is a neoprene cushioning'ring 39'. Acylindrical sleeve 40 is bonded by suitable means to and engages aroundthe neoprene cushioning ring 39for providing additional cushioningeffect to the mounting of the tank on the side membersof the truck. Thiswill provide vertical cushioning as Well as a lateral cushioning effect.The ring 39 is rigidly secured to the like as indicated at 41.

While only one of the cushioning members has been described, there arefive spaced plates 23 secured to the bracket members 18 and 19longitudinally of the tank for mounting of the tank on the truck bed.

Mounted on the top It) of the tank 8 is a framework structure .42consisting of longitudinal side members 43 secured to a plate 43 on topof the tank 8 covering the opening 10 and having spaced uprights 44having their tops secured together by cross members 45, as illustratedin FIG. 2. Spaced longitudinally of the plate 43' and between the siderails 43 are supporting members 46 secured to the plate 43' by brackets47, and each support .6 is provided with longitudinally aligned groovesor cutaway portions 48 and 49 for the reception of barrels or tanks orthe like as indicated at A and B (FIGS. 1 and 7). I preferably utilizefour barrels, as shown by the grooves in FIG. 2, but I have hereillustrated two barrels side by side on one side of the center crossmember 51, the barrels C and D being shown diagrammatically in FIG. 9. Ahousing 52 is provided for the barrel tanks. The tank 8 may beutilized'for storing water and the barrels for liquid soap, detergents,chemical cleaning material and the like. a

The rear portion of the vehicle or truck has a frame portion 53extending rearwardly of the rear wheels 3 and includes an upright cornermember 54, a lower sill member 55 and cross member 56 including a crossbar 57 at the top rear end of the tank. A plate 58 is secured to thecross arm 55 and a bracket 58' is pivotally secured thereto by a pin orbolt 59. The bracket 58' has an extension arm 60. An upright support 61is rigidly .rnounted by welding or other suitable means on the bracket58' and extends upwardly slightly above the top of the housing 52 forthe barrel tanks. A rearwardly plate 23 by welding or the extending arm62 is rigidly secured to the cross member 57 and the upright 61 isrigidly secured to an arm 62 by welding or other suitable means, saidarm being pivotally attached by a pin or the like 62 to prevent backwardtilting of the support 61. r

The upper end of the support 61 is bifurcated as indicated at 63 andpivotally mounted to the bifurcated end 63 by in pin or. the like 64 isan arm 65 extending forwardly toward the cab 11 of the truck. A bucketseat 66 is provided and is pivotally mounted to the forwardly extendingarm65 by rearwardly extending brackets 6'7 and 68 having openings 69 and'70 in their outer ends for receiving a shaft 71 extending through anopening 72 in the forward end 73 ofthe arm 65. Brace arms 74 areprovided having one end rigidly secured to the arm 65 as indicated at 75and their forward ends rigidly secured to the shaft 71 as indicated at76 (FIG. 6).

The bucket seat includes a foot rest '77 and secured to the rear side ofthe foot portion 78 is a brace member '79 having rearwardly extendingcars 39 to which is pivotally attached by a pin'sl a link 82. Brackets83 have one end rigidly secured by welding as indicated at 84 on eachside of the upright post 61 and the brackets 83 have offset forwardlyextending arms 85 to which is pivotally attached the other end of thelink 32 by a pin The brackets 33 are provided with aligned openings S7for receiving a pin 881cm pivotally mounting the piston rod 89 of anhydraulic cylinderv 90, the end 91 of which is pivotally attached by apin 92 to downwardly extending brackets X; rigidly attached on each sideof the forwardly extending arm 65 by welding or other suitable means asindicated at 94. The hydraulic cylinder )3 is provided for raising orlowering the bucket seat for the operator 95 and the link 82 will keepthe seat in upright position at all times.

In order to rotate the bucket seat 66 transversely of the vehicle, 1provide a bracket 95 secured to the bottom 96 of the extension 53 ofthe'framework structure of the vehicle (PEG. 6) and pivotally securedthereto by pin 97 is one end 9t; of an hydraulic cylinder 99 having abifurcated end 1% on the piston rod 101 of the cylinder, the bifurcatedend being pivotally secured by a pin 1132 to the extension arm 6% of thebracket 53'. The bottom 9 of the tank 8 has a drain opening 193 with aclosing plug 193 (FIG. 11) for draining the fluid from the tank and forwashing accumulation of sediment therefrom. A filling opening 104 isprovided in the top 10 of the tank and is provided with a plug 164.

Extending vertically through the tank 8 is a tube 105 through whichlines 1%, 167, 163 and 1tl9 are run to the barrel tanks A, B, C and Dmounted above the tank 8. The barrels have the usual filling openings asindicated at having the usual closing plugs 110. One end of theresilient tubular members 106 to 199 inclusive is connected to openings(not shown) near the bottom of the tank by a nipple or the like (alsonot shown) as is the usual practice.

Manipulation of the bucket seat 66 is provided through hydraulic meansand consists of a tank 12) for the hydraulic fluid or which may besupplied from the hydraulic equipment of the truck. 121 designates ahydraulic motor for supplying pressure in the system through a pump 122operated from the power take-off 123 of the tractor. A control panel 124is provided on the bucket seat within easy reach of the, operator 95. Aline 125 is connected to the pump 122 and to the valve mechanism 118 asindicated at 126 and line 127 leads from the hydraulic fluid tank to thepump 122. A line 128 connects the hydraulic motor 121 with the valve 118as indicated at 129. A line 139 has a connection 131 with the valve 118and is connected to the tank 120 as indicated at 132. A line 133 has oneend connected to the hydraulic motor and also connects with the line 132leading to the tank 129.

A fiuid line 134 is connected to one end of the hyaneaeso drauliccylinder 98 and to the valve 118 as indicated at 135. Another line 136is connected to the other end of the hydraulic cylinder 91 and to thevalve 118 as indicated at 137. A line 138 connects to one end of thecylinder 99 and to the valve 118 as indicated at 138'. A line 139 isconnected to the other end of the hydraulic cylinder 99 and to the valve118 as indicated at 140.

A main valve lever 141 is provided for the valve 118 mounted on theinstrument panel 124 and manipulation of this valve opens the system andenergizes the hydraulic motor 121 for exerting a pressure in thehydraulic system. Operation of the pump 122 through the power take-offfrom the tractor will cause fluid to flow from the tank 120 throughlines 127 and 125 to the valve 118. Valve levers 142 and 143 areprovided on the panel adjacent the main lever 141 and valve 143 willoperate hydraulic cylinder 99 for swinging the arm 65 and the bucketseat laterally with respect to the truck. Movement of the valve 143 inone direction will cause the fluid to how to one end of the cylinder andin the opposite direction to the other end of the cylinder as shown.Movement of the lever 142 in one direction will cause the fluid to flowthrough line 134 to extend the piston rod and the hydraulic cylinder 90to raise the bucket seat and movement of the lever 142 in the oppositedirection will cause the piston rod to retract through movement of fluidthrough line 136 to lower the bucket seat 56. When the hydraulic motoris running, the hydraulic fluid will move from tank 129 to the pump 122and then through the line 125 to the valve 118. It will movecontinuously when the main valve 141 is open through line 131 back tothe tank 120 or it may be bypassed through line 1"3 from the valve 118to the motor 121 and then through line 133 to tank 120.

By'referring to FIG. 9 as shown, there is a diagrammatic view of thewater supply tank and its connection to the motor of the vehicle andradiator and also lines connecting the various tanks for the chemicals.

8 represents the water tank on the truck, 145 the engine of the truckand 146 the radiator. A small water tank 147 is connected by a line 148to the water tank 8 and a line 149 connects the tank 147 with a mixingchamber 150. 151 designates a water pump having a line 152 connectingwith the arm 153 of a brush 154. Aline 155 connects one end of the tank147 with a heat exchanger 156 and a line 157 connects the other end ofthe heat exchanger with the tank 147. A line 158 connects the radiatorwith the engine 145 and has a branch line 159 provided with a valve 160leading to one end of a coil 161 in the heat exchanger 156 and the otherend of the coil includes a line 159' leading to the radiator 146 asindicated at 162. A branch line 163 is connected to the line 159 andconnects with the pump 164 which in turn is connected to the engine 145as indicated at 165. The connections with the engine and radiator arefor supplying hot water to the mixing chamber 15% as desired.

Valves 170, 171, 172 and 173 are connected in the lines 166, 107, 198and 169 adjacent the tanks A, B, C and D (FIG. 9). Needle valves 174,175, 176 and 177 are connected to lines 106, 107, 1138 and 1159respectively. Lines 166, 167, 168 and 169 are connected to the needlevalves and to the mixing chamber 150. Solenoid valves 178, 179, 189 and181 are also connected in the lines between the needle valves and mixingchamber 150 (FIG. 9).

The panel board 124 has control levers 182, 183, 184 and 185 withcircuit lines (not shown) but extending through the tube 186 adjacentthe control levers and leading to the solenoid valves 178 to 181inclusive. The valve 160 has a lever 187 which when closed shuts oil thecirculation of hot water through the tank 147.

The truck 2 is driven to a site for use such as cleaning of a sign 188supported above. ground by posts 189. The truck is driven alongside thesign and through manipulation of the levers 142 and 143 the properheight and transverse adjustment of the bucket seat 66 is made. With thevehicle and bucket seat in the'position shown in FIG. 1,

operation of the engine will energize the pump 151 and opening the mainvalve 141 will cause the water to flow through line 148 through tank 147and line 149 through the mixing chamber 159 and through line 152 to thebrush 154 for contacting the water and brush with the sign to clean thesame.

The tanks A, B, C and I) may house chemicals of the same character or ofdifierent character as desired. The needle valves 174 to 177 are set toallow the desired stream of the respective chemical therethrough and thevalves 17% to 173 opened. Operation of lever 182 on the panel board willcause the solenoid 178 to move the stem 19! against the tension of thespring 191 and move the plug 192 past the opening in the line 166, thusallowing chemicals to flow therethrough and mix with the Water in themixing chamber 150. When the chemical from tank A is depleted, thenmanipulation of the lever 183 will open solenoid valve 179 in the samemanner. if the tanks A, B, C and D contain ditierent chemicals and allof the chemicals are desired to be used with the Water at one time, thenthe levers 182 to inclusive may be manipulated to open the solenoidvalves 176 to 181 and the chemicals and water will mix in the chamber150.

When it is desired to use water heated by the engine and radiator of thevehicle, the valve 160 is opened by the lever 187 and the pump 164 willcause the water to circulate from the engine to the radiator and passthrough line 159 through the coil 161 in the heat exchanger 156 to heatthe water therein, which will then pass out through the lines 157 and149 to the mixing chamber 150. The Water from the tank 8 will passthrough the line 148 to the tank 147, then through the line 155 to theheat exchanger 156 for circulation of the water therethrough, which willbe heated by hot water from the engine passing through the coil 161 inthe heat exchanger 156. The hydraulic motor 121 will operate the pump151 in the water system. Chemicals from tanks A, B, C and D may be usedwith hot water in the same manner as with cold water.

A locking mechanism 193 is provided for the arm 65 and bucket 66 fortransporting the vehicle from place to place and consists of a U-shapedbracket member 194 mounted underneath the bottom 77 of the bucket seat,and the bracket extends longitudinally with the front side 195 of thebucket or transversely of the side 196 thereof. The-arms of one end ofthe bracket 194 have a sloping or angled face 197 and a flange 19%extending outwardly from said sloping surface 197. Mounted on the toppart of the tank 8 near the cab 11 of the vehicle and transversely ofthe side 13 of the tank is a block 209 having a tongue 261 extendingtoward the side 13 and on each side of the tongue are sloping faces 202.The

block 2% is provided with a vertical open tube 203 for receiving a pin204 mounted in a rocking arm 2115 having one end secured to a shaft 206extending through the front wall 195 of the bucket seat and providedwith an upwardly extending arm 267. The shaft is mounted in bearings 298and a standard 299.

When it is desired to lock the bucket in place for transportation of thevehicle, the swinging cylinder 99 is manipulated through the controls,as above stated, and the U-shaped member having its sloping edge 197facing the tonge 2111 will cause the point 210 of the pin to engage thecam surface 211 of the tongue and move thereover and, when it reachesthe opening 293, will automatically enter therein, the point 211 beingspringurged (not shown) as is the usual practice. When the pin 234 isinserted in the opening 2113, the sloping face 197 will be parallel tothe sloping surface 202 of the block 2% and the flange 198 will engageunder the base 212 of the tongue and the tongue 201 will engage in theopening 213 between the arms of the U-shaped bracket member 194. When itis desired to release the locking pin 204, the lever 2&7 may be moved tothe left to raise the bracket arm 265 and the pin from the opening 223and the controls of the swinging cylinder 99 manipfor use in sprayingweeds and the like along the 7. ulated to move the bucket away from thelocking mechanism.

A- chamber 214 isprovided in the rear of the frame under the tank 8 andmounted therein longitudinally of the frame is a drum 2115 for a hose(not shown). The hose may be connected to the line 152 adjacent the pump151 and is provided with a spray nozzle (also not shown) highway andother places. In use of this hose, chemicals suitable for killing weeds,insects and the like are used in tanks A, E, C and D.

It will be obvious from the foregoing that I have pro-.

vided an improved washing mechanism mounted upon a truck for large signcleaning purposes and having Water and chemical tanks mounted thereonand controls for operating the valves and mechanism for using Wateralone or Water and chemicals simultaneously in such washing procedure. I

It is to be understood that While I have illustrated and described oneform of my invention, it is not to be limited to the specific form orarrangement of parts herein described and shown except insofar as suchlimitations are included in the claims.

What It claim and desire to secure by Letters Patent is:

l. A washing unit carried by a vehicle having a frame and side memberscomprising,

(a) a fluid tank,

([1) means resiliently mounting said tank on said side members,

(c) a post vertically and swingably mounted on said frame,

(:1) an arm pivotally mounted on the post,

(e) a seat on the outer end of said arm,

(f) means for swinging said seat transversely of the vehicle and forraising and lowering the same,

(g) valve means carried by said seat,

(h) a line connecting said valve means and said tank,

a mixing chamber in said line from said tank,

(1') a pump carried by sai frame and having a line connected to themixing chamber,

(j) and a brush havim a line connected to said pump, whereby uponoperation of said valve means and pump fluid may be drawn from said tankand supplied to said brush.

2. The apparatus of claim 1 wherein said resilient mounting of the tankincludes at least one cross plate having ends mounted on the sidemembers, elongated resilient members secured to the respective ends ofsaid cross plates, elongated channel members engaging over the resilientmembers, and means resiliently securing said cross plates to said sidemembers.

3. The apparatus of claim 2 wherein said cross plate includes a metalring member at substantially the center thereof, a neoprene ringsurrounding said metal ring and bonded thereto and with its upperportion extending above said metal ring.

4. The apparatus of claim 1 including means between said tank and saidpump for heating said fluid.

5. A washing unit carried by a vehicle having a frame and side memberscomprising,

(a) a main fluid tank,

([1) means resiliently mounting said main tank on said side members,

(c) auxiliary fluid tanks carried by said main tank,

(d) a post vertically and swingably mounted on said frame at the rear ofsaid maintank,

(e) an arm pivotally mounted on the upper end of said post, 7

(f) a seat on the outer end of said arm,

(g) means connected to said seat and said post to maintain said seat invertical position,

(12) means for swinging said seat trwsversely of the vehicle and forraising and lowering the same,

(i) valve control means carried by said seat,

upper end of said (j) lines connecting said valve means and said mainand auxiliary tanks,

(1:) a mixing chamber in the line leading from the main tank and havinconnection with the auxiliary tanks,

(I) a pump carried by said frame and connected to the line having themixing chamber,

(in) a brush having a line connected to said pump,

(it) and valve means in the lines connecting the auxiliary tanks and themixing chamber and controlled by said valve control means whereby fluidmay be selectively drawn from said main and auxiliary tanks and suppliedto said brush.

6. The apparatus of claim 5 wherein said valve means in said linesinclude solenoid valves.

7. The apparatus of claim 5' wherein the means to maintain said seat invertical position consists of a link having one end pivotally connectedto said bucket at a'point spaced below the connection of the bucket tosaid arm and the other end of the link is pivotally connected to saidpost at a point spaced below the connection of the arm to said post. a

8. The apparatus of claim-5 including means for heating said fluid fromthe main tank before it reaches said pump.

9. A washing unit carried by a vehicle having a frame and side memberscomprising.

(a) a main fluid tank,

(12) means resiliently mounting said main tank on said side members,

(c) auxiliary fluid tanks mounted above and carried by said main tank,

(at) a post swingably mounted on said frame,

(e) an arm pivotally mounted on said post,

( a seat on the outer end of said arm including a panel member,

(g) means connected to said seat and said post to maintain said seat invertical position,

(h) hydraulic means for swinging said seat transversely of the vehicleand for raising and lowering the same,

(i) valve control means carried by said panel member,

(j) lines connecting said valve means and said main and auxiliary tanks,

(k) a mixing chamber in the line leading from the main tank and havingconnection with the auxiliary tanks,

(1) a pump carried by said frame and connected to the line having themixing chamber,

(In) a brush having a line connected to said pump,

(it) needle valves in the lines connecting the auxiliary tanks and themixing chamber,

(o) solenoid valves operated by said valve control means in the linesleading from the auxiliary tanks between said needle valves and saidmixing chamber whereby fluid may be selectively drawn from said main andauxiliary tanks and supplied to said mixing chamber and to said brush.

10. In a mobile washing unit including a tank having a bottom mounted ona vehicle having a frame provided with spaced longitudinal side membershaving U-shaped brackets secured thereto and facing each other, aresilient mounting for said tank comprising,

(a) spaced cross plates,

(b) means including an angle member securing the ends of the crossplates to the upper arm of said U-shaped brackets,

(c) elongated resilient members bonded to the upper faces of the ends ofsaid plates, v

(d) channel members embracing said resilient members, upon which thebottom of said tank rests, said channel members having threaded boresfor receiving the threaded ends of stud bolts, said ends of the crossplates and said angle members having openings through which said boltsextend,

(e) resilient collars onsaid bolts,

(f) and nuts for said bolts for resiliently securing said channelmembers to said side members,

(g) said openings in said cross plate and said angle members beinglarger than said stud bolts to provide for transverse and longitudinalmovement of said 5 tank.

11. The apparatus of claim 10 including resilient means secured to thecenter of said cross plates and engaging the bottom of said tank toprovide additional resiliency to said mounting.

References Cited by the Examiner UNITED STATES PATENTS 1,727,609 9/29Kramer 2805 X 2,787,278 4/57 Mitchell 182--l4 X 2,973,112 2/61 Young21483.1

CHARLES A. WILLMUTH, Primary Examiner.

1. A WASHING UNIT CARRIED BY A VEHICLE HAVING A FRAME AND SIDE MEMBERSCOMPRISING, (A) A FLUID TANK, (B) MEANS RESILIENTLY MOUNTING SAID TANKON SAID SIDE MEMBERS, (C) A POST VERTICALLY AND SWINGABLY MOUNTED ONSAID FRAME, (D) AN ARM PIVOTALLY MOUNTED ON THE UPPER END OF SAID POST,(E) A SEAT ON THE OUTER END OF SAID ARM, (F) MEANS FOR SWINGING SAIDSEAT TRANSVERSELY OF THE VEHICLE AND FOR RAISING AND LOWERING THE SAME,(G) VALVE MEANS CARRIED BY SAID SEAT, (H) A LINE CONNECTING SAID VALVEMEANS AND SAID TANK, A MIXING CHAMBER IN SAID LINE FROM SAID TANK, (I) APUMP CARRIED BY SAID FRAME AND HAVING A LINE CONNECTED TO THE MIXINGCHAMBER, (J) AND A BRUSH HAVING A LINE CONNECTED TO SAID PUMP, WHEREBYUPON OPERATION OF SAID VALVE MEANS AND PUMP FLUID MAY BE DRAWN FROM SAIDTANK AND SUPPLIED TO SAID BRUSH.